let a = {
  a:1,
  b:2,
  c:3,
  d:{
    a:1,b:2
  }
  ,e:[1,2,3]
}

console.log(a.toString())
console.log(Number({}))
console.log(Number(a))
console.log({}.toString())

console.log([1,2,3].toString())
console.log(Number([1,2,3]))
console.log(Number([1]))
console.log(Number(' '))